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120399 (2005 QK156)
Classification: Main-belt Asteroid          SPK-ID: 2120399
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0551773586422835 4.4977e-08  
a 2.730905795468801 1.6544e-08 au
q 2.580221626973928 1.2359e-07 au
i 9.022514559537347 5.4384e-06 deg
node 291.8191885723218 2.9597e-05 deg
peri 120.8234935128114 7.1006e-05 deg
M 48.8469009042765 6.0824e-05 deg
tp 2458776.837579879589
(2019-Oct-20.33757988)
0.00027851 TDB
period 1648.384436939759
4.51
1.4979e-05
4.101e-08
d
yr
n .2183956557296448 1.9846e-09 deg/d
Q 2.881589963963673 1.7457e-08 au
  Orbit Determination Parameters
   # obs. used (total)      722  
   data-arc span      8037 days (22.00 yr)  
   first obs. used      1998-01-30  
   last obs. used      2020-02-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53381  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-24 06:18:51  

Additional Information
 Earth MOID = 1.606 au 
 Jupiter MOID = 2.33528 au 
 T_jup = 3.334 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.2   n/a MPO406927  

120399 (2005 QK156)          Discovered 2005-Aug-30 by NEAT at Palomar
Reference: 20051116/Numbers.arcLast Updated: 2005-11-21

[ show close-approach data ]
Alternate Designations
 2005 QK156 = 2002 AS131 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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